Abbey

This page lists questions and answers that were posted by visitors named Abbey.

Questions

The following questions were asked by visitors named Abbey.

What is a regression curve?

B is between A and C. If AB=x squared, BC=9x and AC=36, find the value(s) of x, AB, and BC.

Triangle PQR is a 30-60-90 triangle with right angle Q and segment PQ as the longer leg. Find the possible coordinates of R if P(2,6) and Q(2,-6).

A ladder is leaning against a house and is forming a 60 degree angle with the ground. If the top of the ladder is 18 feet off of the ground, how long is the ladder? Leave your answer in exact form.

A cable that is used to support a 76 foot tower is secured to the ground 31 feet from the base of the tower. Find the angle of elevation to the nearest degree that the cable makes with the ground. Answer choices: 22 degrees, 24 degrees, or 68 degrees.

In triangle ABC, D is the centroid and M is the midpoint of segment AC. If BD=10 and DM=2x+1, find MB. Answer choices: 2 , 9.5, or 15.

Triangle NQP is an equilateral triangle with the measure of angle N=5x-2y and the measure of angle P=x+2y. Find the values of x and y. Show all work to receive credit.

Find the slope of the line containing the two points (1,-1) and (-5,-3).

What did England and the English settlers really want from colonization? National Glory? Wealth? Adventure? A solution to social tensions? New sources of goods and trade? Did they get what they wanted?

A bullet with mass 0.40 kg is fired with an initial velocity of 400 m/s from a gun with mass 5.0 kg. The speed of the reoil of the gun is? Do I have to 0.40 and 5.0 an then divide that by 400?

1) Use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67 degrees 30'

1) Solve the equation exactly for x: log3 x - log3(x-3) = 2 I got 1 as an answer. Is this correct? 2) Find the cotangent of the base angle of an isosceles right triangle. sqrt3 / 2. Is this correct?

Complete the identity secQ - 1/secQ = secQ Is this correct?

Approximate the equation's solutions in the interval (0,2pi) sin2x sinx = cosx 2cos(x) (1/2-sin^2x) = 0 Then I got 3pi/2, pi/2, pi/6 and 5pi/6 Then I substituted 0-3 and got 3pi/2 , 5pi/2 , 9pi/2 , pi/2, pi/6, 7pi/6, 13pi/6 , 19pi/6 , 5pi/6 , 11pi/6 , 17p...

sqrt2 /10 Do I just leave this as sqrt2/10 or can I reduce it to sqrt1/5?

1)tan Q = -3/4 Find cosQ -3^2 + 4^2 = x^2 9+16 = sqrt 25 = 5 cos = ad/hy = -4/5 Am I correct? 2) Use the sum and difference identites sin[x + pi/4] + sin[x-pi/4] = -1 sinx cospi/4 + cosxsin pi/4 + sinx cos pi/4 - cosx sin pi/4 = -1 2 sin x cos pi/4 =-1 co...

2) Use the sum and difference identites sin[x + pi/4] + sin[x-pi/4] = -1 sinx cospi/4 + cosxsin pi/4 + sinx cos pi/4 - cosx sin pi/4 = -1 2 sin x cos pi/4 =-1 cos pi/4 = sqr2/2 2sin^x(sqrt2/2) = -1 sin x = -sqrt2 x = 7pi/4 and 5pi/4 Am I correct?

Find the maximum value of f(x) = -2x^2 + 12x - 14 Do i have to set this equal to o to solve?

Find the quadratic function that has the indicated vertex and whose graph passes through the given point. Vertex: (2,3) Point: (0,2) I do not know how to do this! Please explain!! Thank You

use trigonometric identities to transform one side of the equation into the other. cos Q sec Q = 1

evaluate the trigonometric functions by memory or by constructing appropriate triangles for the given special angles. a) csc 30 degrees b) sin pi/4 = sqrt2 / 2 I just do not know how to find csc 30 degrees.

Find the values of Q in degrees and radians without the aid of a calculator. a) cotQ = sqrt 3 / 3 b) secQ = sqrt2

g(x) = (3/2)^x+2 I need to find the intercepts. My teacher told me to press trace on my graphing calculator to find them. I got x = 0 and y=3 everything else is decimals so is my answer just (0,3)?

divide by long division. divide x^3 + 4x^2 - 3x - 12 by x^2 - 3

What is the primary basis for differentiating the Eras?

Express the function in the form f(x) = (x-k)q(x) + r for the given value of k. f(x) = 15x^4 + 10x^3 - 6x^2 + 14 Value of k = -2/3 I do not understand what I am suppose to do!

Use synthetic division to show that x is a solution of the third-degree polynomial equation, and use the result to factor the polynomial completely. List all the real zeros of the function. x^3 - 28x - 48 = 0 Value of x = -4 Please help!!Thank you

Find the cross product of the unit vectors. j X k My answer was -i. Am I correct?

Find the area of the parallelogram that has the vectors as adjacent sides. u = i + 2j + 2k V = i + k I know that the magnitude of the cross product results on the area. After I do the cross product then what to I do?

1) Write the first five temrs of the geometric sequence a1 = 2 r=sqrt3 I know the first term is 2 but the sqrt 3 threw me off so I do not know how to find the next numbers. 2) Find the nth term of the geometric sequence. a2 = 3 a5 = 3/64 n=1 I know the fo...

Find the areaof the triangle having the indicated sides and angle. B = 72 degrees 30' a = 105 c = 64

The lesson that I am working on is called mathematical induction. The only problem is that the lesson was not explained very clearly due to a problem with the recording so I have no idea how to complete this problem. Find p k+1(This is little under the p)...

I need to show that the right side equals the left side but I am having a little trouble simplifying. k(2k+1) +(4(k+1)-1) = (k+1)(2(k+1)+1) k^2+2k+3 For the right side?

A boat is sailing due east parallel to the shoreline at a speed of 10 miles per hour. At a given time the bearing to the lighthouse is S 70 degrees E, and 15 minutes later the bearing is S 63 degrees E. Find the distance from the boat to the shoreline if...

Find an equation for the ellipse. center:(3,2) a=3c Foci:(1,2)(5,2) h=3 k=2 I do not know where to start.

I am trying to find the standard form of this equation for an ellipse. 9x^2 + 4y^2 - 36x + 8y + 31 = 0 First I grouped the x and y's together. 9x^2 - 36x + ? + 4y^2 + 8y + ? = -31 + ? + ? Then I factored the 9 and 4. 9(x^2-4x+4) + 4(x^2+2x+1) = -31+36+4 9...

Eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. x = sqrt t y = 1 - t

Eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. x = secQ Y = tanQ Would I use cos^2Q + sin^2Q = 1?

Projectile motion: Let's suppose you throw a ball straight up with an initial speed of 50 feet per second from a height of feet. a) Find the equation that describes the motion as a function of time. My answer was x = 0 and y=-16t^2+50t+6 b) How long is th...

Test for symmetry with respect to Q=pi/2 , the polar axis and the pole. r = 16 cos3Q Please explain. I do not know how to do this. Thank You!!

For the function x^2 + 2x - 4 , find lim f(h+4) - f(4) / h h-->0

Eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. x = sec Q y = cos Q x^2 + y^2 = 1/cos^2 + sin^2/cos^2 = x^2(1 +sin^2) = x^2(2-cos^2) x^2(2-1/x^2) = 2x^2 - 1 x^2 - y^2 = 1 My teacher said to use se...

Find the vertex, focus and directrix of the parabola. 4x - y^2 - 2y - 33 = 0 y^2+2y+1 = -4x+33+1 (y+1)^2 = -4(x+8.5) vertex:(-1,-8.5) focus:(-2,-8.5) Directrix: x=0 Is this correct?

Why must one say classe de francais, for french class, and not classe francaise? How does one know when to use de in a descriptive phrase?

solve for x in the following equations: 1) sin(arcsin x) = 1 2) 2arcsin x = 1 3) cos(arccos x) = 1/3

Cos(pi/12) solve using half angle formula

How fast must the ball rolled along the surface of a 70cm high table so that when it roll off the edge it will strike the floor at the same distance (70cm) from the point directly below the edge of the table.

What units of measurement do you use to measure the earth to... 1. Moon 2. Galaxy 3. Sun 4. Communication satellite 5. Pluto 6. Proxima Centauri

What is convection?

Find the lateral area of a cone with a radius of 7 ft. and a slant height of 13 ft. Use 3.14 for ð and round to the nearest tenth

ind the radius of a sphere with a surface area of 804 cm2

A pyramid has a height of 5 in. and a surface area of 90 in2. Find the surface area of a similar pyramid with a height of 10 in. Round to the nearest tenth, if necessary

add the comma to the sentence As they studied the film they noticed some rules of science at work i wrote mine like this As they studied the film, they noticed some rules of science at work

Choose the option that corrects the sentence below. If the sentence is correct, select “d. The sentence is correct.” Commander-in-Chief Sam Houston defeated the Mexican army and captured Santa Anna in 1836 A Commander-in-Chief, Sam Houston, defeated the M...

We finally reached Enkhuizen, an ancient harbor town, where the brisk wind from the sea was blowing so hard that we had to hold on to hats, skirts, and scarves. We walked with farmers and their families to the ferry boat. The farmers were holding baskets...

Why did The Aquarius lose its funding from the NOAA?

If the ratio of the areas of two similar hexagons is 4:49, find the ratio of their apothems

If we take a sample of 2400 families with five children, a) what is the probability that a family will have exactly 2 girls? b) How many of the families would you expect to have exactly two girls?

I am having trouble figuring out the electron configuration for a carbon atom when it is in a molecule such as methane. I know that the ground state configuration for carbon is 1s2 2s2 2p2 but im not sure how to figure it out when it is bonded to other at...

For a carbon atom that is sp2 hybridized, I understand that the electron configuration would be Yes, 1s2 2s1 2p3 which is a 2s up arrow,and 3 orbtials that are 2p up arrows but then since the four bonds hybridize to form four sp3 hybrid bonds how do I wri...

Describe the role of the Quakers, Puritans, and Indians and how each of these groups felt about these leading nations. (By leading nations I mean the three world powers; Great Britain, France, Spain) This is only half the question. I answered the first pa...

Q. Coles sleeping bag has four sides. The side with the zipper is parallel to the opposite side. None of the angles where the sides meet are right angles. The side opposite the zipper is shorter than the side with the zipper. The other two sides are the s...

Question: over the last year, stormy and her 2 sisters saved money for their family trip this summer. They are now getting right to know how much they can spend on each of the 15 days of their trip. If they saved a total of $420, what is the total amount...

I need help on my math the question is make up a set of at least 12 numbers that have the following landmarks with maximum:8 range:6 mode:6 median:5 can you help me solve this equation

Emily receives her paycheck. She spends 1/6 on food. She spends 3/5 of remaining amount on house payment. She spends 1/3 of what is left on her other bills. She spends 1/4 of the remaining money for entertainment. This activity leaves her with $150. What...

find the slope of (3,4) (6, -2)

2.A newspaper started an online version of its paper 14 years ago. In a recent presentation to stockholders, the lead marketing executive states that the revenues for online ads have more than doubled that of the revenues for printed ads since starting th...

The sides of two similar trapezoids are in a ratio of 1:3. The area of the smaller trapezoid is 12 inches squared. Find the area of the larger trapezoid

A steam-electric power plant delivers 900 MW of electric power. The surplus heat is exhausted into a river with a flow of 2.91×105 kg/s, causing a change in temperature of 1.07 oC. A. What is the efficiency of the power plant? B. What is the rate of the t...

How much work is required to lift a bag of wheat (mass 50kg) to a height of 2.4m?

The vapor pressure of liquid chloroform, CHCl3, is 400.0 torr at 24.1°C and 100.0 torr at -6.3°C. What is ΔHvap (in the unit of kJ) of chloroform?

Can't be right quiz connections academy 8th grade. Help me I don't know how to find the leg of a shape

Answers

The following answers were posted by visitors named Abbey.

Nevermind I think I figured it out.

i did -2/3 divided by 15, 10, -6, 0 and 14 I got 15, 0, -6 , 4 ,11.4 Is this correct?

Answered Already

Okay thank you for the help on one and three. In my book for number two it says the answer is sin1/2 which is approx. 0.479. I'm not sure how that answer comes about.

A boat propelled so as to travel with a speed of 0.50m/s in still water, moves directly ( in a straight line) across the river that is 60m wide. The rivers flows with a speed of 0.30m/s. How long in a seconds does it take the boat to across the river?

Just flip flop the two

So the C in methane would be sp3 correct? So does this mean that the electron config would be 1s orbital with an up and down arrow, 2 sp2 orbitals with 3 single up arrows, and a 2p orbital with a single up arrow?

Sorry, the electron config that I posted was for sp2 which I am still not sure is correct.

Ok I think I understand now, thank you very much for the explanation and the website as well. It really helped!!

Yay! Than what do I do ms.sue?

Thank u! I'm not very good at long division, can u help me do it step by step ?

this was really helpful THX so much

Could anyone try to explain it how they did this

Could you maybe explain how you got that.

I tried uploading the graph Graph with x axis labeled years. Y axis labeled revenue in dollars. The line for printed ad revenue starts at 0, 3 and goes through the10, 2. The line for online ad revenue starts at 0, 0 zero and goes through the 10, 3.

Please help me I need some help with this one

How? I don't have mass or time, and I supposed to use 2.91×10^5 kg/s? The problem also does not mention a liquid or anything so how do I know what c to use??

** Answer is 1200J, but I keep getting 1176J.

John's weight loss for each week of the month is 4 pounds 3.5 pounds and 2 pounds he gained 4.5 pounds the last week if John originally weighed 153 pounds how much does he weigh now

D 2 A 3 D 4 B 5 C 6 A 7 D 8 B 9 A 10 D 11 B 12 C 13 C 14 C 15 B 16 D

a^2 + b^2 = c^2 a^2 + 5^2 = 10^2 a^2 + 25 = 100 - 25 -25 ______________ a^2 = 75 find square root a = about 8.6 or a = square root of 75.